Don't propose to make objects abstract (KT-9795)

#KT-9795 Fixed

idea/testData/quickfix/modifiers/noAbstractForObject.kt

@@ -0,0 +1,10 @@
+// "Make 'Some' abstract" "false"
+// ACTION: Create test
+// ACTION: Implement members
+// ACTION: Move 'Some' to separate file
+// ERROR: Object 'Some' must be declared abstract or implement abstract member public abstract fun foo(): kotlin.Unit defined in T
+interface T {
+    fun foo()
+}
+
+object <caret>Some : T